Bordwell pKa Table

Evans pKa Table 

Hans Reich’s Organic Chemistry Database 

NMR Chemical Shifts 

Dictionary of Natural Products

Drug Discovery

Organic Chemistry Portal 

Organic Syntheses

Protecting Groups

CCDC Search Crystal Structure

Chemtips: Because Organic Chemistry is Hard Enough 

Jon Njardarson’s Top-Selling Pharmaceuticals Poster 

Dan Lehnherr’s Chemistry Resources Summary 

Drying of Organic Solvents